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Does the E90 has tires pressure monitor/inductor? how to check the pressure? does it come with the 325 SP AND 330 SP? if i have 325 SP and i bought 330 SP wheels will the tires pressure monitor/inductor still work?

Yes, there are no sensors on the wheels itself. The sensors are based of data from the DSC & ABS sensors that measure the rotational speed of the diagornal wheels (ie. RF/LR). BMW TPMS system will not tell you the pressure in the tires.

According to Continental Teves (supplier of DSC system), the warning will come on if there is a drop of 9-21 psi.